Global Illumination | 3D Graphics Overview
With rasterization and even basic recursive ray tracing, we are still unable to achieve the effect of light bouncing around the scene and causing indirect lighting and colour bleeding. While ray tracing on its own offers the simulation of shadows, reflection, and refraction, we still only calculate diffuse and specular shading with a single bounce of light.
In this lecture, we examine the rendering equation and how it is used to recursively achieve multiple diffuse and specular light bounces so light from multiple areas in the scene can contribute to the final shading calculated for a surface point, resulting in global illumination.
Full series: • 3D Graphics Overview
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